Lock



June 1, 1937. w. F. MOORE 2,082,351

LOCK

Filed Aug. 19, 1932 2 Sheets-Sheet 1 INVENTOR, Wa/laoe E Moore 4m n qATTORN EYS June 1, 1937. w. F. MOORE 2,082,351

' LOCK Filed Aug. 19, 1952 2 Sheets-Sheet 2 INVENTOR, Wad/ace E Moorewyglmm A TORNEYS.

Patented June 1, 1937 PATENT OFFICE LOCK Wallace F. Moore, New Britain,Conn, assignor to The American Hardware Corporation, New Britain, Conn,a corporation of Connecticut Application August 19, 1932, Serial No.629,415

12 Claims.

This invention relates to locks.

One object of the invention is a novel lock construction permitting theready replacement of the key combination.

A further object of the invention is a lock embodying a pin tumbler lockcylinder and a knob and permitting the ready removal and assembly of theknob and the lock cylinder whereby the cylinder may be replaced byanother look 10 cylinder of a different combination of tumblers.

A further object of the invention is a lock embodying a knob and a knobshank which are readily detachable and attachable for the replacement orchange of the lock cylinder. A 15 further object of the invention is alock of this character embodying a knob unit which is readily removableupon releasing the lock and inserting the key to release the key plug.

A further object of the invention is a lock of 20 the characterindicated which requires a key to remove the cylinder and. which is notdependent upon the special settings of pin tumblers for its operationand particularly wherein the use of a 7 special key does not reduce thenumber of changes 25 possible on the pins of the cylinders. A furtherobject of the invention is a lock of this general character wherein thecylinder may be replaced by the use of a regular change key or by theuse of a master key.

30 A further object of the invention is a lock of this general characterwhich is characterized by the simplicity of its construction andmanipulation and which can be economically manufactured.

35 Further objects of the invention will hereinafter appear by referenceto the accompanying drawings wherein:

Fig. 1 is a plan view of a door lock embodying the invention withcertain parts of the door 40 lock omitted for convenience;

Fig. 2 is a section along the line 2-2 of Fig. 1;

Fig. 3 is a sectional view through the knob; Fig. 4 is a sectional viewthrough the knob shank;

45 Fig. 5 is an end view of the latter;

Fig. 6 is an end view of a cooperative locking member;

Fig. 7 is an end view of the cylinder;

Fig. 8 is a view corresponding to Fig. 4; and

50 Figs. 9 to 14 inclusive are end views of the lock with part of theknob broken away showing the steps when assembling the lock parts andassembling the cylinder and knob.

Referring to the drawings, parts of the door 55 lock casing 3| and thedoor lock mechanism have been omitted for convenience in illustration.The invention is illustrated as embodied in a door lock comprising aknob I, and a knob shank 2. It is understood that the shank 2 may belocked by a mechanism, omitted from the drawings, against 5 rotation andwhen this is thus locked the door can be opened only by the insertion ofthe key within the cylinder plug; whereas when this shank 2 is unlocked,as for example from the inside, the whole knob I together with the shank2 may be turned to unlock the door. The shank 2 is journaled in asuitable bearing 3 carried by the door lock case.

The knob assembly includes the knob I, the shank 2, the lock cylinder 4,and a locking ring 15 5. The lock cylinder 4 is of standard constructionexcept that the plug 6 has a shoulder I formed with a notch 8 (Fig. 7),the latter having one straight side and one side rounded olT at 9 toform a cam surface. The shank 2 and the knob I are adapted to befastened to each other by a relative rotary movement and in theparticular embodiment shown they are provided with mating screw threadsfor this purpose, the enlarged end 2' of the shank having externalthreads for engaging the threaded opening I of the knob. The screwthreaded parts of the shank and knob are provided with looking slots I0and I I. One of these members, as for example the shank 2, is providedwith a latch or trip I2 pivoted at I3 which is disposed in the slot IDof the shank and is adapted to enter the slot II to lock the shank andthe knob together in their assembled position. This trip I2 is normallyheld in looking engagement-by means of the shoulder I formed on the endof the cylinder plug, and

is provided with a heel I4 which engages the periphery of the shoulderor collar 1 in the locked and assembled position.

The ring 5 is provided with a flaring skirt I6 which in the assembledposition of the parts makes a close fit with the interior peripheraledge ll of the knob, as indicated in Fig. 2. This ring 5 is provided onits interior peripheral edge I9 with a slot I8 having rounded oil. orinclined cam sides I8 for cooperating with the trip I2 as willhereinafter be described.

In the assembled position of the knob and cylinder as shown in Fig. 14,the slot I8 of the ring 5 and the slots III and II in the shank and knobrespectively are in alinement, with the trip I2 alining these threemembers and holding them in alined position. In the particularembodiment therein shown the cylinder and cylinder plug with its notch 8are as indicated in 45 trip [2.

Fig. 14, the notch 8 being disposed 135 from the alined slots and keyway20, that is, with the key in a vertical plane and knob and shank lockedagainst rotation.

With the knob assembled as in Figs. 1, 2 and 14 the knob may be removedas follows:

The key is inserted in the keyway 20 (Fig. 14) to permit the turning ofthe plug 5 and hence the spindle 25 relatively to the cylinder 4 and, of

course; the shank 2 is unlocked to permit the turning of knob I andshank 2 in the door lock. The key plug is then turned relatively to theknob and shank and in the particular embodi ment of the invention shownthe key is then 15 turned counter-clockwise' wig'; :14)- a nd the-knoband shank are turned clockwise to'bringthe slot -25 is disposed betweenthe end of the key plug giandithezmoyable abutment plate 28 within theor notch 8 into alinement with thetripIZ. "The trip I2 is then causedto; drop into .theranotch 8 either by gravity or by the turning of" thering 5 to force it into this notch, thereby re leasing the knob. I fromthe shank 2 and permitting the relative turning thereof=to unscrew theknob I' from shank 2. The cam surfaces .I8 of the slot.I8 formed in thering function to forcethe trip..l2.into thenotch 8 and out of the slot.I I formed in the knob I. The removal of the knob ,I permits thereplacement of the .lock. cylinder.with one of. aldifferent combinationwithin the knob .I. 3 'I'hesteps in the assembling or, reassembling ofthe knob are indicated in Figs. 9 to 14. The cylinder. 4 is first.inserted into the knob I with the projection 22 thereof placed. betweenthe lugs 23 formed on the interior of the knob. The key is then inserted.into the cylinderand the square ,ho1e.24. in the cylinder. plug isplaced over the spindle 25v in. the. body of the door lock. .The ring 5is turnedto aLpositionwhere the sl0t..I8 isout of .alinementwith thetrip I2. The knob Imay then bescrewed partly onto the shank 2. The trip..I2 is in, the" position indicated in Fig. 4 and the knob.I.is..arrested by the .shoulder I of thev plug coming into engagement,with the face I5' of theheel M. of the .The.-initia1 position before.the screwing operation begins is indicated in. Fig., 9. Fig. 10indicates. the relative. position of the knob I. and the shank 2with.the shoulder I in position against the face 15, thatdsinthe particularembodiment of the inventionhereinshown. ,It is then necessary vto bringthe notch. 8 into alinement with the slots .10 and I I to permit thetrip I2 to enter-the notch- 8. Thisis effected by rotating the key plug6, counter-clockwise from the. dottedposition shown in Fig. .10 to thefull line .position. there-shown, -namely-.90, and by turningthe knob Iand shank 2 clockwise through P as indicated in Fig. 11. Theknob I-.andthe shank 2 now turn together by reason of the engagement-between, thezShOlJldEl I and the heel I4 ofthe trip. The notch 8 then beinginalinement withthe trip vI2 the-cylinder togethen-with the plug I maybepushed hometo the position indicated in. Fig. 2v whereupon the knob I.may

- 165 be screwed home to the, .final position indicated in'Fig. 12. Thenext step isthet urning of the ring 5 with the slot I8 into alinementwith the nslOtS=|0"and indicated in Fig. 13, whereupon the-key is thenturned clockwise tothe vertical positionshown in Fig. l4..Theturni-ngxof key plug. 6 causes the cam-surface 9' of..,the :notch:8':to;1cam-the 'trip I2 into' the slots I I and I8 and ,theshoulder I1holds .-these .-parts in :theposition indicated in-Fig-. 14.

In the particular embodiment shownithe knob I together with the shank 2are turned to the position shown in this Fig. 14, the notch 8 beingdisposed 135 from alinement with the slots II), II and I8. It isobserved that with the shank 2 locked in position against turning, thekey may be turned to lock and unlock the door without the notch 8 cominginto alinement with the slots I0 and II. It is only when the shank 2 isunlocked to permit an approximate 45 turn in either direction that thenotch 8 and'the slots III and II may be brought into alinement which isutilized for the assembly above described.

In the final assembly the ring 5 is retained in looking position by thetrip I2 entering the slot: 3 I 8. Y

A'coil spring 2! coiled about a roll back spindle knob 'shank, theabutment plate being in the form ot a, washer resting upon an annularshoulder formed on the interior OfizthG vshank.

This-.spring maintains the rend-of the cylinder 'againstthe outer .endwallzduring the unscrewing of the knob.

. I claim:

1. .A lock-comprising a knob, a knob'shank, a cylinder with a. key plugcontained within .the knob, said knob and said shank being adapted to-be fastened. together byarelative rotary movements, means for lockingtheshank and the knob against relative turning movements. and meansoperative upon relative turning .movements-.;of the key plug andthe knobfor. unlocking said locking means, whereinthelocking means comprises apivoted latch. member, and=saidknob and shank are provided with..slots,saidlatching means operating whensaid .slots are in alinement.

2. A lock comprising a knob, a knobshank, a cylinder with, a key,,plug.contained within the knob, said knob, and .saidv sha'nkbeing adapted tobe fastened together. by. .relative rotary movements, means forlockingthelshank and the knob against relative. turning movementsandi-means operative upon relative turning movements "of the. key plugand the.knob.for.unlocking.ssaid locking means,. wherein the.lockingimeans comprises a pivoted latch.member.operating.in registering'slots formed in the shank and the knob, and.whereinthennlocking meanscomprises a .notchformedin the key plug and. adapted tobe brought intoalinementwith :the slots..in...the shank and'knob. Y

3. A look comprising a knobpa knob '1 shankea cylinderwith.askey plugcontained within'the knob, said knob andsaid shank being adapted-to befastened together by rrelative .rotary' moyements, meansfor lockingztheshank-andtheknob against relative turning-movements andwmeans operativeupon relativeturningw movements .;0f the key plug and the-knob.fonunlockingw-said locking means, wherein thenlocking meansv zoom--prises a pivoted latch-member operating in registering slots formed inthe shank and the:knob,

and wherein.the unlocking means. comprises a r notch formedin, thecylinder plug andadapted to be brought into alinement with the slotsinzthe shank and knob and aring'having acamsurface for engagingthe-.latchmember and Iorcing the sameinto said slot.

- 4,. A lock comprisinga knob, a::cylinder andia key plug contained.within' saidknob; a knob shank upon which said;-knob, is screwthreadedly attached. and means for-clocking .the: knob. to theknob;.shank comprising. 81?. pivoted; latchzmember and a swivelling ringwith a slot and cam surface cooperating with said latch member.

5. A look comprising a knob, a cylinder with a key plug contained withinthe knob, a knob shank screwthreadedly attached to said knob, said knoband said shank comprising registering slots, a latch member carried byone of said members and adapted to enter said registering slots, and aswivelling ring cooperatively engaging said latch member to hold thelatch member out of looking engagement and to permit the lockingengagement, the said key plug also having a part cooperating with thelatch member to permit the releasing of the latch member and to compelthe engagement of the same.

6. A look of the character set forth in claim 5, a shoulder on saidlatch member disposed in the path of and engaged by the key plug tocause turning of the knob and knob shank in unison after the knob ispartially screwed upon the shank, said plug being provided with a slotwhich is alinable with said latch member to permit the longitudinalmovement of the plug to permit the shoulder to enter the slot for thecompletion of the screw attachment of the knob to the knob shank.

7. A lock of the character set forth in claim wherein the swivellingring is provided with a cam surface for forcing the latch member out oflocking engagement with the knob and the knob shank and the key plug isprovided with a cam surface for forcing the latch member into operativeengagement.

8. A look comprising a knob shank, a knob, a lock cylinder with a keyplug contained within the knob, a spindle for operating a door lockassociated with said key plug, means for attaching the knob to the knobshank and latching means pivotally mounted upon the shank and operative3 upon relative movements of the key plug and knob shank for locking theknob to the shank.

9. A look comprising a knob shank, a knob and a lock cylinder and keyplug combination which is readily detachable and attachable as a unit tothe knob shank for the replacement of the cylinder, including a latchingmeans pivotally mounted upon the shank which is released upon turningmovements of the key plug and knob shank.

10. A look comprising a spindle, a knob shank, a knob, a lock cylinderwith a key plug contained within the knob, said key plug adapted toengage said spindle, means for attaching the knob to the knob shank andlatching means pivotally mounted upon the shank and operative uponopposite turning movements of the key plug and knob shank for lockingthe knob to the shank and a key for releasing the key plug from thecylinder to first control the knob locking means and thereafter operatethe spindle.

11. A look comprising a knob shank, a knob and a cylinder combination,and latching means pivotally mounted on the shank to permit the knob andcylinder combination to be readily detachable from or attachable to saidknob shank as a unit for the replacement of the cylinder.

12. A lock comprising a knob shank, a knob, a cylinder and key plugcombination which is readily detachable from or attachable to said knobshank as a unit for the replacement of the cylinder and latching meanspivotally mounted on the shank for securing said combination thereto,said combination being detachable upon imparting to the key plug and theknob a relative turning movement of a predetermined degree to releasesaid locking means.

WALLACE F. MOORE.

